A common myth is that a single testosterone test can reliably diagnose menopause or guide hormone therapy. The fact is: testosterone levels in women decline gradually from around age 30, not abruptly at menopause. Symptoms like fatigue, low libido, and mood changes are nonspecific and can stem from many causes. The Endocrine Society recommends testosterone measurement in women only when a specific disorder (e.g., hypogonadism) is suspected, not as routine screening. Reference ranges for women are poorly standardized, and many commercial tests use male norms, leading to misinterpretation. A high testosterone level may indicate an underlying condition; a low level is often clinically irrelevant. Evidence for testosterone replacement therapy in menopausal women is limited and not proven for all symptoms. Therefore, a single testosterone test is not a 'fact check' for menopause—it is one piece of a puzzle that must be evaluated in a clinical context. Without proper medical history and examination, such tests are often marketing rather than evidence-based medicine.
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